Halevai thank you for proving my point, obviously that gemara isnt literal. No, the gemara is not saying Hashem LITERALLY wears tfilin. According to the Rambam (and most Rishonim) saying that Gemara is literal is kefira, since Hashem doesnt have a head nor arm, thus He can’t literally be wearing tefilin.
On the other hand to say the Avos literally wore tefilin is not kefira, though it may be silly.
If you are saying that the two gemaras are similar in that both cases aren’t literally talking about wearing tefilin, and the Avos did not literally wear tefilin, thus did not literally keep 613 mitzvos, then we are in full agreement.
Otherwise while we can disagree about tefilin (ie you can say they did literaly wore tefilin) we can move on to other mitzvos like zechiras amalek which they can not have literally kept.